>> all the good things in the world that a good, creative, productive, that help make the world a better place, that is really where the focus should be. >> pioneers dream of the democratization of industrial production, but they know once 3-d printing spreads out -- throughout our networked world, it will be extremely difficult to control. >> visitors are flocking to the northeastern chinese city of harbin for the annual snow and ice festival. the art work starts out as massive blocks of ice, which are then transformed by some very talented craftsmen craftswoman into delicate sculptures. plenty of power tools swing into action, as well as some surprising household items. this is a very temporary exhibition, of course. the warmer weather is likely to melt the art work away in just a few weeks. >> wow.